Optically induced birefringence in TI:Al2O3

R. L. AGGARWAL; K. F. WALL; R. E. FAHEY; A. J. STRAUSS

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 1988),
paper MH6

Optically induced birefringence in TI:Al₂O₃

R. L. AGGARWAL, K. F. WALL, R. E. FAHEY, and A. J. STRAUSS

Conference on Lasers and Electro-Optics 1988

Anaheim, California United States
25–29 April 1988
ISBN: 1-55752-033-X

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Nonlinear Optics: 2 (MH)

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R. L. AGGARWAL, K. F. WALL, R. E. FAHEY, and A. J. STRAUSS, "Optically induced birefringence in TI:Al2O3," in Conference on Lasers and Electro-Optics, D. Pinnow and P. Moulton, eds., Vol. 7 of OSA Technical Digest (Optica Publishing Group, 1988), paper MH6.

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Abstract

We have observed optically induced birefringence¹ in Ti:AI₂O₃ at signal wavelengths of 632.8 and 790.7 nm during the course of small-signal gain measurements² on a Ti:AI₂O₃ amplifier pumped with 532-nm radiation from a frequency-doubled Q-switched (10-ns pulse) Nd:YAG laser. The changes in intensity of the signal beam due to induced birefringence were found to decay with a time constant characteristic of the fluorescence lifetime of Ti³⁺ ions. We, therefore, attribute the induced birefringence to the Ti³⁺ excited-state (²E_g) population.

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